Check strap check



Dec. 24, 1940. H. BAHAN cmacx STRAP CHECK .Filed Nov. 15, 1959 WILL/ AMH. BAI-IAN Patented Dec. 24, 1940 UNITED- PATENT OFFICE f-:onneK,s'rRAP, oHncK I Bahan, Greenville, S. C.

Appi'eatannvebr 3, 1939, serial Ne. 3023744 'v *aoiainisf (01.139--169v.Thisf invention relates to Sa picker stick :check for looms and moreespecially to a devicewhich ;can 'be easily' adjusted' sov as tofvarytheire'sistance 'offered 'by the lcheck strap' when thea stick is'forced thereaganst. ;1 L j 'The present invention isparticularly'useful 'in connection with a strap "iwhich en'GircI-esvthepicker stick and. which has thel end thereof; se- 'cured to a projectionfrom'lf'the 'lay lwhereby the strap will serve as a check for. the'stick'whencthe stick is travelling in eitherdirection; The-.princ'ipleinvolved in causing straps of this: type' to act as aV check'inthevdirecting of'a portion of the strap in a path or channel;formed'ibygripping membersjdisposed on opposed sidesithiereof. This pathis usually not parallel touthe. linesof force exerted uponthe strap bythe picker stick, thereby setting up a frictional resistance to theslippage of the strap and causing the impact of the stick to begradually absorbed. When the angle of the strap relative to the line offorce is increased, the resistance to the movement of the strap willincrease in a corresponding manner. Heretofore, there have been problemsof adjusting and keeping adjusted, the angle at which the strap isdirected relative to the line of force or to the line of travel of thestick, because after much use the strap becomes worn and the resistanceis reduced. Also much trouble is encountered in maintaining the strapgripping members in the position to which they have been adjusted.

It is, therefore, an object of this invention to provide a member forgripping opposed sides of the loom check strap, which member is readilyand easily adjustable and which will remain in adjusted position despitethe vibration and strain set up by the [picker stick.

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds when taken in connection withthe accompanying drawing, in which- Figure 1 is an elevation of aportion of a lay of a loom showing my improved picker stick checkassociated therewith;

Figure 2 is a sectional plan view taken along the line 2-2 in Figure 1;

Figure 3 is an isometric View of the picker stick check mechanismshowing the same apart from the loom and looking from the opposite sidefrom that shown in Figure 1. I

Referring more specifically to the drawing, the numeral I 0 denotes thelay of a loom having a box front I I mounted thereon which forms a partof a shuttle box into which shuttle I2 'is adapted to be received andfrom which it is adapted to be expelled by means of a suitable picker I4on the upperend of a picker stick I5. This picker stick moves back andforth from right to left in Figure 1, in a well known manner during thereception and the expulsion of theshuttle. The lay IU has 5 a downwardlyprojecting member IB towhichthe ends of a check strap I 'I are securedby any suitable means such asv abolt I8. 'By referring to Figure 2 it isseen that this bolt inot only penetratesthe member I 6, but also'penetrates slots 10 IB, 20 and 2I which are cut in the ends of the strapI 'I and in a suitable metallic plate 22.

The'stru'cture thus far described is conventional in looms. When theshuttle IZ is hurled into the shuttle box'it strikes the picker I4, the15 picker stick' I5 will be moved to the left. Ih orderto ichecktheimpact or momentum of this stick, it is necessary to provide means forholding the strap I'I in such a manner that it will gradually give wayunder the impact of the picker 20 stick. A similar restraining operationmust be employed to check the stick I5 when it lmoves' to expel theshuttle from the shuttle box. In order to provide a gripping means toproduce this result, a suitable bracket 25 has been secured to the 25lower side of the lay IO by any suitable means such as bolts 26 and 28.Extending downwardly from the member 25 is a projection 29, saidprojection having -a laterally projecting lip 30 integral therewith,which projection supports the 30 strapv I'I approximately midway ofitsoval-shaped position. The member 25 also has a lug 3I extendinglaterally therefrom which is penetrated by a vertically disposed bolt32. T'his bolt also penetrates a boss 33 which is in off-center posi- 35tion relative to a cam or pipe member 34. Since the head of the bolt 32is disposed on the lower xbe held in adjusted position despite anymovement of the strap I'I.. Figure 2 also shows the 'gripping actionthat produces the friction or resistance offered by the strap I'l to thepicker stick I5. This resistance, as heretofore stated, is 45 producedby bending a portion of the check strap which is disposed betweenthemembers 34 and 29 at an angle t-o the line of force eXerted by thepicker stick. Of course, the greater the angle that the strap makes atthe gripping point, the 50 greater the resistancewhich will be offered.This variation of the angularity can be effected by merely loosening thenut 36 and then turning pipe 34 to the desired position. The bracket 36.has a slot 25a. therein which will permit the 55 bracket 25 to beadjusted to different positions on the bottom of the lay of the loom.This slot is penetrated by bolt 28 Which has been previously described.

In the drawing and specification there has been set forth a preferredembodiment of the invention, and although specific terms are employed,they are used in a generic and descriptive sense only, and not forpurposes of limitation, the scope of the invention being set forth inthe appended claims.

I claim:

l. In a loom having a lay provided with a shuttle box and a picker stickmounted for oscillatory movement in the shuttle box, and havingl a checkstrap surrounding the path travelled .by the picker stick and having itsends secured together and anchored tothe lay at lone side of the pathtravelled by the picker stick, retarding means disposed on the oppositeside of the shuttle box from the anchoring member for engaging the checkstrap and retarding movement of the same under the force applied to thepicker stick after receiving a shuttle and after discharging a shuttle,said retarding means comprising a .bracket secured to one side of thelay and projecting beneath the lay and having a doWnWardly extending legprovided with an out-turned projection for supporting the check strap, acylindrical member disposed in vertical parallel relation to the leg,means on the bracket for eccentrically supporting said cylindricalmember within the arcuate confines for adjustment, the cylindricalmember being disposed in longitudinal off-set relation to the leg andbeing adapted to engage the other side of the check strap from thatengaged by the leg to thereby provide a circuitous course to betravelled by the check strap to thereby retard movement of the checkstrap in both directions longitudinally of the lay under the v impact ofthe picker stick in its movement in receiving and expelling the shuttle.

2. Means for supporting and retarding one side of a picker stick checkstrap in the shuttle box of a loom, comprising a bracket secured to thelay and projecting beneath the lay, said bracket having a verticallydisposed leg for engaging the inner surface of the check strap, acylindrical member adjustably and eccentrically mounted on the bracketand extending downwardly for en gaging the outside of the check strap,the cylindrical member being disposed longitudinally of the check straprelative to the leg, whereby the engaged portion of the check strap willbe co'mpelled to travel at an acute angle to the path of the pickerstick when it is moved by impacts therefrom to thereby retard the pickerstick at points adjacent the end of its travel in both directions.

3. A bracket adapted to be mounted on a loom lay for engaging'a pickerstick check strap, said bracket having a Vertically disposed member forengaging lone vface of the strap, a vertically disposed 'cylindricalmember for engaging the other face of said strap, said cylindricalmember being adjustably and eccentrically mounted whereby a horizontalstraight line drawn tangent to the proximate faces of both members Willbe disposed at an acute angle to the longitudinal axis of the lay andwhereby the cylindrical member can be rotated about its eccentric axisto vary the angularity of the engaged portion of the check strap.

WILLIAM H. BAHAN.

